package multithread;


//使用Callable实现
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;

public class ThreadDemo16 {
    public static void main(String[] args) throws ExecutionException, InterruptedException {
        Callable<Integer> callable = new Callable<Integer>() {
            @Override
            public Integer call() throws Exception {
                int result = 0;
                for(int i = 1;i<=1000;i++){
                    result += i;
                }
                return result;
                //可以直接返回结果，不需要引入额外的成员变量
            }
        };

        FutureTask<Integer> futureTask = new FutureTask<>(callable);
        Thread t = new Thread(futureTask);

        t.start();
        System.out.println(futureTask.get());
    }
}



